text: The Falcon Ultra-Fine (UF) centrifugal concentrator is primarily used for the separation of heavy minerals which occur in ore concentrations above 0.1% by weight, such as cassiterite, tantalum and scheelite when the majority of the particles are smaller than 75 µm. The machine generates forces up to 600 times the force of gravity (600 G's) and uses a smooth-walled bowl for particle stratification with a pneumatically controlled rubber lip for heavy material collection. The machine is stopped periodically to rinse and collect the valuable concentrate from the bowl. Studies have found that the deposition of heavy material within the bowl can be predicted by a hindered settling model. The Falcon UF concentrator is used in a number of process plants around the world such as the Tanco mine in Canada and the Bluestone tin mine in Tasmania.